1// SPDX-License-Identifier: GPL-2.0-only
  2/* Copyright (c) 2021 Linaro Ltd.
  3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
  4 *   Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
  5 */
  6
  7#include <linux/delay.h>
  8#include <linux/gpio/consumer.h>
  9#include <linux/module.h>
 10#include <linux/of.h>
 11#include <linux/regulator/consumer.h>
 12
 13#include <video/mipi_display.h>
 14
 15#include <drm/drm_mipi_dsi.h>
 16#include <drm/drm_modes.h>
 17#include <drm/drm_panel.h>
 18
 19struct sharp_ls060 {
 20	struct drm_panel panel;
 21	struct mipi_dsi_device *dsi;
 22	struct regulator *vddi_supply;
 23	struct regulator *vddh_supply;
 24	struct regulator *avdd_supply;
 25	struct regulator *avee_supply;
 26	struct gpio_desc *reset_gpio;
 27	bool prepared;
 28};
 29
 30static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
 31{
 32	return container_of(panel, struct sharp_ls060, panel);
 33}
 34
 35#define dsi_dcs_write_seq(dsi, seq...) ({				\
 36		static const u8 d[] = { seq };				\
 37									\
 38		mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d));	\
 39	})
 40
 41static void sharp_ls060_reset(struct sharp_ls060 *ctx)
 42{
 43	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 44	usleep_range(10000, 11000);
 45	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 46	usleep_range(10000, 11000);
 47	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 48	usleep_range(10000, 11000);
 49}
 50
 51static int sharp_ls060_on(struct sharp_ls060 *ctx)
 52{
 53	struct mipi_dsi_device *dsi = ctx->dsi;
 54	struct device *dev = &dsi->dev;
 55	int ret;
 56
 57	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 58
 59	ret = dsi_dcs_write_seq(dsi, 0xbb, 0x13);
 60	if (ret < 0) {
 61		dev_err(dev, "Failed to send command: %d\n", ret);
 62		return ret;
 63	}
 64
 65	ret = dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START);
 66	if (ret < 0) {
 67		dev_err(dev, "Failed to send command: %d\n", ret);
 68		return ret;
 69	}
 70
 71	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
 72	if (ret < 0) {
 73		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
 74		return ret;
 75	}
 76	msleep(120);
 77
 78	ret = mipi_dsi_dcs_set_display_on(dsi);
 79	if (ret < 0) {
 80		dev_err(dev, "Failed to set display on: %d\n", ret);
 81		return ret;
 82	}
 83	msleep(50);
 84
 85	return 0;
 86}
 87
 88static int sharp_ls060_off(struct sharp_ls060 *ctx)
 89{
 90	struct mipi_dsi_device *dsi = ctx->dsi;
 91	struct device *dev = &dsi->dev;
 92	int ret;
 93
 94	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 95
 96	ret = mipi_dsi_dcs_set_display_off(dsi);
 97	if (ret < 0) {
 98		dev_err(dev, "Failed to set display off: %d\n", ret);
 99		return ret;
100	}
101	usleep_range(2000, 3000);
102
103	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
104	if (ret < 0) {
105		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
106		return ret;
107	}
108	msleep(121);
109
110	return 0;
111}
112
113static int sharp_ls060_prepare(struct drm_panel *panel)
114{
115	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
116	struct device *dev = &ctx->dsi->dev;
117	int ret;
118
119	if (ctx->prepared)
120		return 0;
121
122	ret = regulator_enable(ctx->vddi_supply);
123	if (ret < 0)
124		return ret;
125
126	ret = regulator_enable(ctx->avdd_supply);
127	if (ret < 0)
128		goto err_avdd;
129
130	usleep_range(1000, 2000);
131
132	ret = regulator_enable(ctx->avee_supply);
133	if (ret < 0)
134		goto err_avee;
135
136	usleep_range(10000, 11000);
137
138	ret = regulator_enable(ctx->vddh_supply);
139	if (ret < 0)
140		goto err_vddh;
141
142	usleep_range(10000, 11000);
143
144	sharp_ls060_reset(ctx);
145
146	ret = sharp_ls060_on(ctx);
147	if (ret < 0) {
148		dev_err(dev, "Failed to initialize panel: %d\n", ret);
149		goto err_on;
150	}
151
152	ctx->prepared = true;
153
154	return 0;
155
156err_on:
157	regulator_disable(ctx->vddh_supply);
158
159	usleep_range(10000, 11000);
160
161err_vddh:
162	regulator_disable(ctx->avee_supply);
163
164err_avee:
165	regulator_disable(ctx->avdd_supply);
166
167	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
168
169err_avdd:
170	regulator_disable(ctx->vddi_supply);
171
172	return ret;
173}
174
175static int sharp_ls060_unprepare(struct drm_panel *panel)
176{
177	struct sharp_ls060 *ctx = to_sharp_ls060(panel);
178	struct device *dev = &ctx->dsi->dev;
179	int ret;
180
181	if (!ctx->prepared)
182		return 0;
183
184	ret = sharp_ls060_off(ctx);
185	if (ret < 0)
186		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
187
188	regulator_disable(ctx->vddh_supply);
189
190	usleep_range(10000, 11000);
191
192	regulator_disable(ctx->avee_supply);
193	regulator_disable(ctx->avdd_supply);
194
195	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
196
197	regulator_disable(ctx->vddi_supply);
198
199	ctx->prepared = false;
200	return 0;
201}
202
203static const struct drm_display_mode sharp_ls060_mode = {
204	.clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000,
205	.hdisplay = 1080,
206	.hsync_start = 1080 + 96,
207	.hsync_end = 1080 + 96 + 16,
208	.htotal = 1080 + 96 + 16 + 64,
209	.vdisplay = 1920,
210	.vsync_start = 1920 + 4,
211	.vsync_end = 1920 + 4 + 1,
212	.vtotal = 1920 + 4 + 1 + 16,
213	.width_mm = 75,
214	.height_mm = 132,
215};
216
217static int sharp_ls060_get_modes(struct drm_panel *panel,
218				 struct drm_connector *connector)
219{
220	struct drm_display_mode *mode;
221
222	mode = drm_mode_duplicate(connector->dev, &sharp_ls060_mode);
223	if (!mode)
224		return -ENOMEM;
225
226	drm_mode_set_name(mode);
227
228	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
229	connector->display_info.width_mm = mode->width_mm;
230	connector->display_info.height_mm = mode->height_mm;
231	drm_mode_probed_add(connector, mode);
232
233	return 1;
234}
235
236static const struct drm_panel_funcs sharp_ls060_panel_funcs = {
237	.prepare = sharp_ls060_prepare,
238	.unprepare = sharp_ls060_unprepare,
239	.get_modes = sharp_ls060_get_modes,
240};
241
242static int sharp_ls060_probe(struct mipi_dsi_device *dsi)
243{
244	struct device *dev = &dsi->dev;
245	struct sharp_ls060 *ctx;
246	int ret;
247
248	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
249	if (!ctx)
250		return -ENOMEM;
251
252	ctx->vddi_supply = devm_regulator_get(dev, "vddi");
253	if (IS_ERR(ctx->vddi_supply))
254		return PTR_ERR(ctx->vddi_supply);
255
256	ctx->vddh_supply = devm_regulator_get(dev, "vddh");
257	if (IS_ERR(ctx->vddh_supply))
258		return PTR_ERR(ctx->vddh_supply);
259
260	ctx->avdd_supply = devm_regulator_get(dev, "avdd");
261	if (IS_ERR(ctx->avdd_supply))
262		return PTR_ERR(ctx->avdd_supply);
263
264	ctx->avee_supply = devm_regulator_get(dev, "avee");
265	if (IS_ERR(ctx->avee_supply))
266		return PTR_ERR(ctx->avee_supply);
267
268	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
269	if (IS_ERR(ctx->reset_gpio))
270		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
271				     "Failed to get reset-gpios\n");
272
273	ctx->dsi = dsi;
274	mipi_dsi_set_drvdata(dsi, ctx);
275
276	dsi->lanes = 4;
277	dsi->format = MIPI_DSI_FMT_RGB888;
278	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
279			  MIPI_DSI_MODE_NO_EOT_PACKET |
280			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
281
282	drm_panel_init(&ctx->panel, dev, &sharp_ls060_panel_funcs,
283		       DRM_MODE_CONNECTOR_DSI);
284
285	ret = drm_panel_of_backlight(&ctx->panel);
286	if (ret)
287		return dev_err_probe(dev, ret, "Failed to get backlight\n");
288
289	drm_panel_add(&ctx->panel);
290
291	ret = mipi_dsi_attach(dsi);
292	if (ret < 0) {
293		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
294		drm_panel_remove(&ctx->panel);
295		return ret;
296	}
297
298	return 0;
299}
300
301static void sharp_ls060_remove(struct mipi_dsi_device *dsi)
302{
303	struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi);
304	int ret;
305
306	ret = mipi_dsi_detach(dsi);
307	if (ret < 0)
308		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
309
310	drm_panel_remove(&ctx->panel);
311}
312
313static const struct of_device_id sharp_ls060t1sx01_of_match[] = {
314	{ .compatible = "sharp,ls060t1sx01" },
315	{ /* sentinel */ }
316};
317MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match);
318
319static struct mipi_dsi_driver sharp_ls060_driver = {
320	.probe = sharp_ls060_probe,
321	.remove = sharp_ls060_remove,
322	.driver = {
323		.name = "panel-sharp-ls060t1sx01",
324		.of_match_table = sharp_ls060t1sx01_of_match,
325	},
326};
327module_mipi_dsi_driver(sharp_ls060_driver);
328
329MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
330MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel");
331MODULE_LICENSE("GPL v2");